ok, we use point slope form which is
(y-y1) = m (x-x1)
you only plug numbers into y sub one and x sub one. you use the points they give you. recall that coordinates are written (x, y)
so y1= -4 and x1= 3
plug everything into the equation
remember that m stands for slope
y--4= 2 (x-3)
y+4 = 2x -6
y= 2x -10